@girl_chan
The error you are encountering usually occurs when a widget referenced in a Databricks notebook is not defined. In your case, the issue is likely related to how you pass parameters from Azure Data Factory (ADF) to Delta Live Tables (DLT) in Databricks.
- Create Widgets in Your Databricks Notebook
You need to define widgets to receive the parameters passed from ADF.
- Configure Azure Data Factory Pipeline to Pass Parameters
In ADF, when you call the Databricks notebook through the "Notebook" activity, you need to provide the parameters in the base parameters section.